<template>
  <view class="page">
    <!-- <view class="u-search-box">
			<view style="float: right; ">
				<u-button class="btn" type="primary" @click="navTo('groupForm')" size="mini">
					<text style="padding-right: 4px;">添加组</text>
				</u-button>
				<u-button class="btn" type="warning"@click="navTo('form')" size="mini" style="margin-left: 10px;">
					<text style="padding-right: 4px;">添加用户</text>
				</u-button>
			</view>
		</view> -->
    <view class="page-main">
      <scroll-view class="tab-list menu-scroll-view" :scroll-top="scrollTop" :scroll-into-view="itemId"
        scroll-with-animation scroll-y>
        <view v-for="(item,index) in data" :key="index" class="tab-item" :class="[current == index ? 'active' : '']"
          @tap.stop="swichMenu(index)">
          {{item.groupName}}
        </view>
      </scroll-view>
      <scroll-view class="right-box" :scroll-top="scrollRightTop" @scroll="rightScroll" scroll-with-animation scroll-y>
        <view class="card-list">
          <view v-for="(item , index) in data" :key="index" :id="'item' + index" class="card-item class-item">
            <view class="card-item-hd" @click="navTo('groupForm?id='+item.id)">
              组: {{item.groupName}}
            </view>
            <view class="card-item-bd">
              <view class="contact-list">
                <view v-for="(item1, index1) in item.userList" :key="index1" class="contact-item"
                  @click="navTo('form?id='+item1.id)">
                  <view class="contact-desc">{{item1.account}}</view>
                  <view class="contact-title">{{item1.userName}} {{item1.phone}}</view>
                </view>
              </view>
            </view>
          </view>
        </view>
        <!-- <view class="page-view">
          <view class="class-item" :id="'item' + index" v-for="(item , index) in data" :key="index">
            <view class="item-title" style="margin-bottom: 30rpx;" @click="navTo('groupForm?id='+item.id)">
              <u-row gutter="16">
                <u-col span="12">
                  <u-section :title="'组:   '+item.groupName" sub-title="" :arrow="true" line-color="blue"></u-section>
                </u-col>
              </u-row>
            </view>
            <u-line color="#c8c9cc" />
            <view class="item-container">
              <view class="uni-list" v-for="(item1, index1) in item.userList" :key="index1"
                style="margin-top: 5rpx;margin-bottom: 5rpx;" @click="navTo('form?id='+item1.id)">
                <view style="margin-left: 10rpx; margin-bottom: 20rpx;">
                  <u-row gutter="16">
                    <u-col span="2">
                      <u-icon name="man-add" size="40" color="#2b85e4"></u-icon>
                    </u-col>
                    <u-col span="8">
                      <view>{{item1.account}} </view>
                      <view>{{item1.userName}} </view>
                      <view>{{item1.phone}} </view>
                    </u-col>
                    <u-col span="2">
                      <u-icon style="margin-right: 5rpx;" name="edit-pen" size="40" class="u-m-r-15"
                        color="#0055ff"></u-icon>
                    </u-col>
                  </u-row>
                </view>
              </view>
            </view>
          </view>
        </view> -->
      </scroll-view>
    </view>
    <view class="page-footer">
      <view class="button" @click="navTo('groupForm')">添加组</view>
      <view class="button" @click="navTo('form')">添加用户</view>
    </view>
  </view>
</template>
<script>
  export default {
    data() {
      return {
        scrollTop: 0, //tab标题的滚动条位置
        oldScrollTop: 0,
        current: 0, // 预设当前项的值
        menuHeight: 0, // 左边菜单的高度
        menuItemHeight: 0, // 左边菜单item的高度
        itemId: '', // 栏目右边scroll-view用于滚动的id
        data: null,
        menuItemPos: [],
        arr: [],
        scrollRightTop: 0, // 右边栏目scroll-view的滚动条高度
        timer: null, // 定时器
        tagShow: false,
        show: false,
        headStyle: {
          fontWeight: 'bold',
          color: '#606266',
          margin: '16rpx'
        },
      }
    },
    onLoad() {

    },
    created() {
      this.$u.api.message.msgGroupUser.ownerList().then(res => {
        if (!res.data || res.data.length == 0) {
          return;
        }
        res.data.forEach((item) => {
          item.checked = false;
          item.userList.forEach((userItem) => {
            userItem.checked = false;
          })
        })
        this.data = res.data;
        this.getMenuItemTop()
      });
    },
    onReady() {

    },
    methods: {
      navTo(url) {
        uni.navigateTo({
          url: url
        });
      },
      // 点击左边的栏目切换
      async swichMenu(index) {
        if (this.arr.length == 0) {
          await this.getMenuItemTop();
        }
        if (index == this.current) return;
        this.scrollRightTop = this.oldScrollTop;
        this.$nextTick(function() {
          this.scrollRightTop = this.arr[index];
          this.current = index;
          this.leftMenuStatus(index);
        })
      },
      // 获取一个目标元素的高度
      getElRect(elClass, dataVal) {
        new Promise((resolve, reject) => {
          const query = uni.createSelectorQuery().in(this);
          query.select('.' + elClass).fields({
            size: true
          }, res => {
            // 如果节点尚未生成，res值为null，循环调用执行
            if (!res) {
              setTimeout(() => {
                this.getElRect(elClass);
              }, 10);
              return;
            }
            this[dataVal] = res.height;
            resolve();
          }).exec();
        })
      },
      // 观测元素相交状态
      async observer() {
        this.data.map((val, index) => {
          let observer = uni.createIntersectionObserver(this);
          // 检测右边scroll-view的id为itemxx的元素与right-box的相交状态
          // 如果跟.right-box底部相交，就动态设置左边栏目的活动状态
          observer.relativeTo('.right-box', {
            top: 0
          }).observe('#item' + index, res => {
            if (res.intersectionRatio > 0) {
              let id = res.id.substring(4);
              this.leftMenuStatus(id);
            }
          })
        })
      },
      // 设置左边菜单的滚动状态
      async leftMenuStatus(index) {
        this.current = index;
        // 如果为0，意味着尚未初始化
        if (this.menuHeight == 0 || this.menuItemHeight == 0) {
          await this.getElRect('menu-scroll-view', 'menuHeight');
          await this.getElRect('tab-item', 'menuItemHeight');
        }
        // 将菜单活动item垂直居中
        this.scrollTop = index * this.menuItemHeight + this.menuItemHeight / 2 - this.menuHeight / 2;
      },
      // 获取右边菜单每个item到顶部的距离
      getMenuItemTop() {
        new Promise(resolve => {
          let selectorQuery = uni.createSelectorQuery();
          selectorQuery.selectAll('.class-item').boundingClientRect((rects) => {
            // 如果节点尚未生成，rects值为[](因为用selectAll，所以返回的是数组)，循环调用执行
            if (!rects.length) {
              setTimeout(() => {
                this.getMenuItemTop();
              }, 10);
              return;
            }
            rects.forEach((rect) => {
              // 这里减去rects[0].top，是因为第一项顶部可能不是贴到导航栏(比如有个搜索框的情况)
              this.arr.push(rect.top - rects[0].top);
              resolve();
            })
          }).exec()
        })
      },
      // 右边菜单滚动
      async rightScroll(e) {
        this.oldScrollTop = e.detail.scrollTop;
        if (this.arr.length == 0) {
          await this.getMenuItemTop();
        }
        if (this.timer) return;
        if (!this.menuHeight) {
          await this.getElRect('menu-scroll-view', 'menuHeight');
        }
        setTimeout(() => { // 节流
          this.timer = null;
          // scrollHeight为右边菜单垂直中点位置
          let scrollHeight = e.detail.scrollTop + this.menuHeight / 2;
          for (let i = 0; i < this.arr.length; i++) {
            let height1 = this.arr[i];
            let height2 = this.arr[i + 1];
            // 如果不存在height2，意味着数据循环已经到了最后一个，设置左边菜单为最后一项即可
            if (!height2 || scrollHeight >= height1 && scrollHeight < height2) {
              this.leftMenuStatus(i);
              return;
            }
          }
        }, 10)
      },
      handleDeleteGroup(row) {
        let self = this;
        uni.showModal({
          title: '提示',
          content: '确认要删除该组吗,删除后无法恢复？',
          showCancel: true,
          success: function(res2) {
            if (res2.confirm) {
              self.$u.api.message.msgGroup.delete({
                ids: row.id
              }).then(res => {
                self.$u.toast('删除成功！');
                location.reload();
              });
            }
          }
        });
      },
      handleDelete(row) {
        let self = this;
        uni.showModal({
          title: '提示',
          content: '确认要删除用户数据吗,删除后无法恢复？',
          showCancel: true,
          success: function(res2) {
            if (res2.confirm) {
              self.$u.api.message.msgGroupUser.delete({
                ids: row.id
              }).then(res => {
                self.$u.toast('删除成功！');
                location.reload();
              });
            }
          }
        });
      }
    }
  }
</script>

<style lang="scss" scoped>
  .page {
    display: flex;
    flex-direction: column;
    height: 100vh;
    background: #f7f7f7;
  }

  .page-main {
    display: flex;
    flex: 1;
    overflow: hidden;
  }

  .page-footer {
    display: flex;
    padding: 24rpx;
    background: #fff;

    .button {
      flex: 1;
      height: 96rpx;
      border-radius: 96rpx;
      line-height: 96rpx;
      text-align: center;
      font-size: 32rpx;
      font-weight: 500;
      color: #fff;
      background: #3989FC;

      &+.button {
        margin-left: 24rpx;
        background: #FF6600;
      }
    }
  }

  .tab-list {
    flex-shrink: 0;
    width: 176rpx;
    height: 100%;
    background: #fff;
  }

  .tab-item {
    position: relative;
    padding: 32rpx 24rpx;
    font-size: 24rpx;
    font-weight: 500;
    color: #666;

    &.active {
      font-weight: 700;
      color: #005EFF;
      background: #f7f7f7;

      &::before {
        content: '';
        position: absolute;
        top: 50%;
        left: -4rpx;
        display: inline-block;
        width: 8rpx;
        height: 32rpx;
        border-radius: 8rpx;
        background: #005EFF;
        transform: translateY(-50%);
      }
    }
  }

  .card-list {
    padding: 24rpx 0 24rpx 24rpx;
  }

  .card-item {
    border-radius: 8rpx 0 0 8rpx;
    padding: 24rpx;
    margin-bottom: 24rpx;
    background: #fff;
  }

  .card-item-hd {
    position: relative;
    padding-left: 24rpx;
    margin-bottom: 32rpx;
    font-size: 28rpx;
    font-weight: 700;
    color: #333;

    &::before {
      content: '';
      position: absolute;
      top: 50%;
      left: 0;
      display: inline-block;
      width: 6rpx;
      height: 32rpx;
      border-radius: 6rpx;
      background: #005EFF;
      transform: translateY(-50%);
    }

    &::after {
      content: '';
      position: absolute;
      top: 12rpx;
      right: 2rpx;
      box-sizing: border-box;
      display: inline-block;
      width: 12rpx;
      height: 12rpx;
      border-top: 2px solid #999;
      border-right: 2px solid #999;
      transform: rotate(45deg);
    }
  }

  .contact-item {
    padding: 16rpx;
    border-radius: 8rpx;
    font-size: 24rpx;
    font-weight: 500;
    color: #333;
    background: #f2f2f2;

    &+.contact-item {
      margin-top: 24rpx;
    }
  }

  .contact-title {
    margin-top: 8rpx;
    font-size: 28rpx;
  }
</style>